Re: [Discuss-gnuradio] Filter design

[Daniele Nicolodi]

On 23/07/2014 14:01, Daniele Nicolodi wrote:
> Hello,
> 
> GNURadio offers three different interfaces to design filters from Python
> code: gnuradio.filter.firdes.xxx, gnuradio.filter.firdes.xxx_2, and
> gnuradio.filter.optfir.xxx.
> 
> The three interfaces use different parameters to specify the filter
> properties, but the only obvious difference is that the optfir is coded
> in python and thus not available to be used elsewhere.
> 
> Which one is recommended to use? Can anyone suggest a reference that
> explains how the filter taps are computed?
> 
> In my data analysis code I usually use Butterworth filters. If there is
> any analogy, how do those map to the filters designed with the above tools?

Partially answering my own questions:

http://gnuradio.squarespace.com/examples/2010/9/12/basic-filtering.html

Cheers,
Daniele